@fsf I vaguely remember having read an article a little while ago that MS approached Lenovo to do exactly this. So now it has become true – and we all can see how much MS loves Linux and open source.
Anyone surprised? Not me.
Ah, and here's the article I remembered: https://www.golem.de/news/microsoft-auflagen-fuer-secured-core-pc-verhindern-linux-boot-2207-166808.html
"The fact that Linux systems do not boot on Lenovo computers is probably due to Microsoft's conditions."